Balance 30 Captive Portal - requests new authentication after user web timeouts

We are using a Balance 30 (firmware 6.2.2 build 3008) with a 30Mbps X 30Mbps terrestrial microwave internet connection (Static IP). We are using the Captive Portal with no bandwidth restrictions. We have a customer with the following issue - *There is a little issue with the connection time outs. Sometimes when a large download is running - like an OS update - and there are some longish pauses - like torrent downloads have from time to time - the system goes into a timeout and requires another pass at the captive portal.
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Do you have any information on what could be happening and any possible resolution?

Thank you for your help.

We would need to take a closer look at this, please open a support ticket for a deeper dive:
https://contact.peplink.com/secure/create-support-ticket.html